Nut-lock.



G. W. PYBUS.

NUT LOOK.

APPLICATION FILED JUNE 16, 1913 1,09 1,959, Patented Mar. 31, 1914.

COLUMBIA PLANOGRAPH 50.. WASHINGTON. n. c

rr TES ATET NUT-LOOK.

Specification of Letters Patent.

Application filed June 16, 1913.

Patented Mar. 3t, 1914.

Serial No. 773,893.

To all whom it may concern Be it known that I, GEORGE WILLIAM From, asubject of the King of Great Britain, and resident of 24: Montro-seavenue, in the city of Toronto, county of York, Province of Ontario, inthe Dominion of Canada, mechanic, have invented certain new and usefulImprovements in Nut-Locks, of which the following is a specification.

The invention relates to improvements in nut looks, as described in thepresent specification and illustrated in the accompanying drawings thatform part of the same.

The invention consists essentially in the novel means employed wherebythe co-action of a split sleeve and an oval washer effectively lock thenut to its home position.

The objects of the invention are to devise a reliable form of lockwhereby the nuts on railway joints and other places cannot become loosefrom the effects of vibration, to eliminate bolts of specialconstruction so frequently used in nut locks, and generally to provide asimple form of nut lock that will be cheap to manufacture and of adurable nature.

In the drawings, Figure 1 is a perspective view of one half of the splitsleeve. Fig. 2 is a perspective view of the oval washer. Fig. 3 is aperspective view of a particular form of nut that may be used in thisinvention. Fig. 4 is an elevation of the assembled parts showing thenut, bolt, washer and split sleeve partially in section. Fig. 5 is aperspective view showing the form of split sleeve used with theparticular form of nut illustrated in Fig. 3. Fig. 6 is a plan view ofthe assembled parts.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, 1 is a split sleeve formed of the two partsidentical in every respect, each part having in the outer wall thereofthe groove 2 and at the inner end thereof the flange 3, the interiorwall of said parts of the sleeve having the teeth 4 or other suitablesurface. This inner wall may if necessary be lined with a fibrousmaterial or composition to prevent the burring of the threads on thebolt 7.-

5 is the oval washer having the centrally arranged notches 6 therein andhaving the oval central hole 7 into which the parts of the split sleeve1 fit, said washer being of suflicient thickness to fit snugly in thegrooves 2.

8 is a bolt here shown as having the head 9 and joining the pieces 10and 11 together, said bolt being threaded and having the nut 12 mountedon the threaded end and screwed up tightly to the piece 10.

The split sleeve 1 is mounted on the eX- tending threaded end of thebolt beyond the nut 12 and secured tightly up against the outer face ofthe nut, the said bolt spreading the two parts of the sleeve and forcingsaid sleeve into a substantially oval shape, the oval washer is thenmounted on said sleeve and turned until the narrow part of the ovalwasher is brought into engagement with the ends of the oval sleeve whichforces the parts of the sleeve tightly to the projecting threaded end ofthe bolt and absolutely prevents any movement of the nut 12, the notches6 forming a variation in the line of the oval washer and preventing thesaid washer from slipping off.

In Figs. 3 and 5 the only difference is that an additional lock isformed by the teats 13 on the sleeve projecting in the hole 14 in thnut, otherwise the construction is pre cisely the same.

It will of course be readily seen that the bolt spreads the parts of thesleeve making the diametrical measurement greater than it otherwisewould be, consequently the turning of the washer forces the parts closertogether and at the same time embraces thebolts more tightly.

WVhat I claim is 1. In a nut lock, the combination with a bolt and nutmounted on the threaded end of said bolt, of a split sleeve formed of aplurality of parts and an elongated washer having a substantially ovalhole and engaging the outer walls of said parts and drawing them closelyto the projecting portion of the bolt beyond the nut.

2. In a nut lock, the combination with a bolt having a threaded portionand a nut mounted on said threaded portion, of a split sleeve formed oftwo parts, each of said parts having a groove in the outer wall thereofand an interior wall having suitable means therein for gripping thethreaded portion of said bolt, and an elongated washer having a centraloval hole and engaging said sleeve parts in said groove, and adapted toforce said sleeve parts tightly against the'threaded portion of the boltimmediately adjoining the outer face of said nut.

3. In a device of the class described, in combination, a bolt having athreaded end portion, a nut mounted onsaid threaded end portion havingslots in the outer face thereof, a split sleeve formed of two parts eachhaving a teat projecting into one of said closely to said boltimmediately adjoining 10 said nut.

Signed at the city of'Toronto, Ont, this 21st day of April, 1913.

GEORGE WILLIAM PYBUS.

slots and a Washer having a substantially Witnesses: oval hole thereinand engaging the outer W. G. HAMMOND, Wall of said sleeve parts andforcing them D. S. TOVELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

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